The Statistical Diagnosis and Numerical Experiment of Atmospheric Teleconnection Patterns in Northern Hemisphere

The study is aiming at researching the existence, spatial-temporal features and the formation causes of circulation teleconnection patterns on the time scale of dekad in the Northern Hemisphere by using the techniques of diagnostic analysis and numerical modeling. The results show that the five types of teleconnection patterns are very clear on the scale of dekad, being strong in winter and weak in summer; the characteristic index series of each pattern has its inherent periodicity; the anomalous SST in some ocean regions can stimulate some relevant teleconnection patterns and there are no-linter interactions among the five types of teleconnection patterns. The five types of teleconnection patterns have good relationships with the general circulation and weather anomaly, so that they can be the basis of studying long-range weather process and prediction methods.